added total queries monitoring

Still needs an introduction and there are some questions to be
answered. Probably ought to demonstrate the code in an event handling
function.

renamed ActiveRecord::create() to populateRecord()

- refactored elasticsearch AR to make type and index available in
  instantiate(), issue #1313

fixes #2281

Convert database type to php

fixes #2276

I18n docs fix

see https://github.com/yiisoft/yii2/commit/0cfd41a21a8d89cc577590a253893542e60d43ce#commitcomment-5238567
issue #2233

fix kazakh translation